32 FAUNA OF MAYFIELD'S CAVE. 



October 28, 1903. November 4 one of the pupae was drawn (fig. 3). 

 The next day one had emerged. The second came out November 6. 

 The pupa drawn measured 2.8 mm. by 7.1 mm. Blatchley (1896, 196) 

 found this species in total darkness in Marengo and Donnehue's cave. 

 Wickharn (1896, 196) says of this species: 



Widely distributed (above ground) , being found according to Dr. 

 Hamilton's recent catalogue, over all of North America, as well as 

 the other continents, except South America. 



Packard (1888, 74) records it from Weyer's Cave in 

 Virginia and Dixon's Cave in Kentucky, and considers it a 

 common species in the Middle and Western States. This 

 is evidently not a true cave species, but its breeding at the 

 mouth of caves and wandering into caves indicates an 

 inclination to become cave-inhabiting. 



This genus lives ' 'under stones and bark in damp for- 

 ests" (Le Conte & Horn, 1883, 95). There are 19 North American 

 species. 



Philonthus lomatus Erichson. 



A single specimen taken at bait at "40" two weeks after a heavy 

 flood in the cave. Its occurrence was no doubt altogether accidental. 



Tachinus repandus Horn. 



Two specimens taken during November, 1903, under a stone just 

 inside the cave. It was not even in dim twilight and scarcely deserves 

 mention in this connection. 



Lesteva pallipes var. picescens Le Conte. 



Some of this species were seen on October 22, 1902, near the mouth. 

 June 4, 1903, several were seen under stones on loose earth at "3," 

 together with their empty pupa cases. At the same time time others 

 were found under stones as far in as " 11," but not abundantly farther 

 than the rays of twilight extended. 



On October 28, 1903, a bright, warm day, this beetle was extremely 

 abundant around the mouth of the cave. It was so abundant that 10 or 

 15 would be found on a single dry maple leaf, yet it was not seen more 

 than 25 feet from the mouth of the cave. The surface of a small log- 

 just at the mouth was literally alive with them. The individuals were 

 taking wing and all of them seemed to be headed from the cave for the 

 outside. 



Investigation on the same day showed that where they had been so 

 abundant within the cave they had suddenly become scarce. A few 



